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Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His)

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Based on 1 Customer Validation

Fractalkine/CX3CL1 protein, a chemokine, binds CX3CR1 and integrins ITGAV:ITGB3 and ITGA4:ITGB1. It regulates immune response, inflammation, adhesion, chemotaxis, and leukocyte migration. It activates integrins via CX3CR1-dependent and -independent pathways, binding to site 1 with CX3CR1 and site 2 without CX3CR1. Soluble Fractalkine/CX3CL1 attracts T-cells and monocytes, not neutrophils. Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His) is the recombinant human-derived Fractalkine/CX3CL1 protein, expressed by HEK293 , with C-His labeled tag.

For research use only. We do not sell to patients.
  • Species: Human
  • Source: HEK293
  • Storage:
    Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.
  • Experimental Validation Results for Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His)
  • Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His) Product Image
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To place orders, for customer services and technical support, please contact:

609-228-6898
[email protected] [email protected]
Find Your Local Distributor Your local distributor: Hycultec GmbHHycultec
  • Biological Activity
  • Technical Parameters
  • Product Properties
  • Documentation
  • Help & FAQs
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Biological Activity

Description

Fractalkine/CX3CL1 protein, a chemokine, binds CX3CR1 and integrins ITGAV:ITGB3 and ITGA4:ITGB1. It regulates immune response, inflammation, adhesion, chemotaxis, and leukocyte migration. It activates integrins via CX3CR1-dependent and -independent pathways, binding to site 1 with CX3CR1 and site 2 without CX3CR1. Soluble Fractalkine/CX3CL1 attracts T-cells and monocytes, not neutrophils. Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His) is the recombinant human-derived Fractalkine/CX3CL1 protein, expressed by HEK293 , with C-His labeled tag.

Background

Fractalkine/CX3CL1 is a chemokine that serves as a ligand for both CX3CR1 and integrins ITGAV:ITGB3 and ITGA4:ITGB1. Its signaling through the CX3CR1-CX3CL1 pathway plays various roles in different tissue compartments, including immune response, inflammation, cell adhesion, and chemotaxis. It regulates leukocyte adhesion and migration at the endothelium and can activate integrins in both a CX3CR1-dependent and CX3CR1-independent manner. In the presence of CX3CR1, it activates integrins by binding to the classical ligand-binding site (site 1), while in the absence of CX3CR1, it binds to a second site (site 2) in integrins that is distinct from site 1 and enhances the binding of other integrin ligands to site 1. The soluble form of Fractalkine/CX3CL1 acts as a chemotactic factor for T-cells and monocytes but not neutrophils.

Verified Bioactivity

Measured by its binding ability in a functional ELISA.

MCE Validation Data

  • Purity - SDS-PAGE

    Purity - SDS-PAGE

    ≥ 95%, as determined by reducing SDS-PAGE.

Technical Parameters

  • Species Human
  • Source HEK293
  • Tag C-His
  • Accession

    P78423 (Q25-R339)

  • Gene ID
    6376  [NCBI]
  • Molecular Construction
    • N-term
    • Fractalkine (Q25-R339)
      Accession # P78423
    • His
    • C-term
  • Protein Length

    Extracellular Domain

  • Synonyms

    CX3CL1; NTN; Prev. SCYD1; CX3C Membrane-Anchored Chemokine; Chemokine (C-X3-C Motif) Ligand 1; Small-Inducible Cytokine D1; Fractalkine; C-X3-C Motif Chemokine 1; Neurotactin; NTT; C3Xkine; Small Inducible Cytokine Subfamily D (Cys-X3-Cys), Member-1; ABCD

  • AA Sequence

    QHHGVTKCNITCSKMTSKIPVALLIHYQQNQASCGKRAIILETRQHRLFCADPKEQWVKDAMQHLDRQAAALTRNGGTFEKQIGEVKPRTTPAAGGMDESVVLEPEATGESSSLEPTPSSQEAQRALGTSPELPTGVTGSSGTRLPPTPKAQDGGPVGTELFRVPPVSTAATWQSSAPHQPGPSLWAEAKTSEAPSTQDPSTQASTASSPAPEENAPSEGQRVWGQGQSPRPENSLEREEMGPVPAHTDAFQDWGPGSMAHVSVVPVSSEGTPSREPVASGSWTPKAEEPIHATMDPQRLGVLITPVPDAQAATR

  • Predicted Molecular Mass

    34.4 kDa

  • Molecular Weight

    Approximately 50-90 kDa, based on SDS-PAGE under reducing conditions, due to the glycosylation.

  • Glycosylation

    Yes

  • Purity

    ≥ 95%, as determined by reducing SDS-PAGE.

Product Properties

Appearance

Lyophilized powder.

Formulation

1.Lyophilized from a 0.22 μm filtered solution of 20 mM PB, 150 mM NaCl, pH 7.2.
2.Lyophilized from a 0.22 μm filtered solution of PBS, 5% trehalose, 5% mannitol, 0.01% Tween-80, pH 7.4.
Please refer to the lot-specific COA for specific buffer information.

Endotoxin Level

<1 EU/μg, determined by LAL method.

Reconstitution

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH2O. For long term storage it is recommended to add a carrier protein (0.1% BSA, 5% HSA, 10% FBS or 5% Trehalose).

Storage & Stability

Stored at -20°C for 2 years from date of receipt. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Shipping

Room temperature in continental US; may vary elsewhere.

Calculators

Reconstitution Calculator

Volume (to add to vial) = Mass (in vial) ÷ Desired Reconstitution Concentration

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Dilution Calculator

Concentration (start) × Volume (start) = Concentration (final) × Volume (final)

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The Specific Activity Calculator Equation
  • Specific Activity (Unit/mg)
  • Biological Activity (ED50)

Specific Activity (Unit/mg) = 106 ÷ Biological Activity (ED50)

Specific Activity (Unit/mg) Specific Activity (Unit/mg)
Unit/mg
= 106 ÷
Biological Activity (ED50) Biological Activity (ED50)
106 ÷
ng/mL
MOQ
Minimum order quantity
100 mg

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Measured by its ability to inhibit anti-CD3-induced proliferation of stimulated CTLL-2 mouse cytotoxic T cells. The ED50 this effect is 0.8023 μg/ml, corresponding to a specific activity is 1246.42 units/mg.

Assay Types
  • 1/16

    MedChemExpress Validation
     ≥ 95%, as determined by reducing SDS-PAGE.

  • Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His) Product Image
    1/16
  • Experimental Validation Results for Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His)
  • Fractalkine/CX3CL1 Protein, Human (315a.a, HEK293, His) Product Image